آزمون آنلاین زبان انگلیسی 2 - درس دوم | آزمون شماره 1275

Which of the following simple sentences is grammatically wrong?

The city needs to ......................... its public transportation. It needs new modern trains.

A/An .................................. research showed that Americans watch TV more than other people around the world. 

The pilots must need a rest , they ............................ from a long flight.